Require hspec-meta == 1.12.0
Use Haskell2010
Remove hspec-th/.gitignore
Add --module-name to hspec-discover (close #168)
Bump version
Rename hspec.cabal -> hspec-meta.cabal
Remove cabal test-suite sections
Don't require any specific version of hspec-expectations

(the version that is used by hspec has to be used anyway)
Rename package to hspec-meta
Adapt synopsis and description